2 vsepr theory molecules with expanded valence shells

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Geometries Step 1: Draw the Lewis structure Step 2: Count the total number of electron pairs around the central atom Step 3: Arrange the electron pairs in one of the above geometries to minimize e--e- repulsion (Multiple bonds count as one bonding pair) Step 4: determine molecular geometry NH 3 Predicting Predicting Molecular Geometry Molecules with more than one central atoms more H H O C C H O H 9.3 9.3 Polarity of Molecules A covalent bond is POLAR when the bonding electrons are not shared equally Dipole Moment ≠ 0 1) Diatomic molecules: polar bonds always result in an overall dipole overall moment. moment. 9.3 Polarity of Molecules 2) Polyatomic Molecules: 2) Polyatomic O C O O Non-polar S polar polar 9.3 Polarity of Molecules 2) Polyatomic Molecules: 2) CH4 CH3Cl CH2Cl2 CHCl3 CCl4 non-polar polar polar polar non-polar 9.3 Polarity of Molecules Alkanes Tetrahedral C2H6 Alkenes Alkenes C2H4 Alkynes C2H2 Trigonal planer planer linear...
View Full Document

This document was uploaded on 02/26/2014.

Ask a homework question - tutors are online